Darwin shooting: Gunman used a prohibited firearm, was possibly looking for a person named Alex

Police say the suspected Darwin gunman was on parole, allegedly looking for a person named Alex, and used a prohibited firearm, that may have been stolen as far back as 1997. At least four people died in the shooting.

Members of the Territory Response Group (TRG) arrest a suspected gunman in Darwin. Source: AAP Image/Supplied by ABC News